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H16 Keratitis

ICD-10-CM category H16 sits in Chapter 7 (Diseases of the eye and adnexa, H00-H59). It contains 126 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

H16.0 Corneal ulcerH16.00 Unspecified corneal ulcerH16.01 Central corneal ulcerH16.02 Ring corneal ulcerH16.03 Corneal ulcer with hypopyonH16.04 Marginal corneal ulcerH16.05 Mooren's corneal ulcerH16.06 Mycotic corneal ulcerH16.07 Perforated corneal ulcerH16.1 Other and unsp superficial keratitis without conjunctivitisH16.10 Unspecified superficial keratitisH16.11 Macular keratitisH16.12 Filamentary keratitisH16.13 PhotokeratitisH16.14 Punctate keratitisH16.2 KeratoconjunctivitisH16.20 Unspecified keratoconjunctivitisH16.21 Exposure keratoconjunctivitisH16.22 Keratoconjunctivitis sicca, not specified as Sjogren'sH16.23 Neurotrophic keratoconjunctivitisH16.24 Ophthalmia nodosaH16.25 Phlyctenular keratoconjunctivitisH16.26 Vernal keratoconjunct, w limbar and corneal involvementH16.29 Other keratoconjunctivitisH16.3 Interstitial and deep keratitisH16.30 Unspecified interstitial keratitisH16.31 Corneal abscessH16.32 Diffuse interstitial keratitisH16.33 Sclerosing keratitisH16.39 Other interstitial and deep keratitisH16.4 Corneal neovascularizationH16.40 Unspecified corneal neovascularizationH16.41 Ghost vessels (corneal)H16.42 Pannus (corneal)H16.43 Localized vascularization of corneaH16.44 Deep vascularization of cornea

Billable codes in H16

CodeDescription
H16.001Unspecified corneal ulcer, right eye
H16.002Unspecified corneal ulcer, left eye
H16.003Unspecified corneal ulcer, bilateral
H16.009Unspecified corneal ulcer, unspecified eye
H16.011Central corneal ulcer, right eye
H16.012Central corneal ulcer, left eye
H16.013Central corneal ulcer, bilateral
H16.019Central corneal ulcer, unspecified eye
H16.021Ring corneal ulcer, right eye
H16.022Ring corneal ulcer, left eye
H16.023Ring corneal ulcer, bilateral
H16.029Ring corneal ulcer, unspecified eye
H16.031Corneal ulcer with hypopyon, right eye
H16.032Corneal ulcer with hypopyon, left eye
H16.033Corneal ulcer with hypopyon, bilateral
H16.039Corneal ulcer with hypopyon, unspecified eye
H16.041Marginal corneal ulcer, right eye
H16.042Marginal corneal ulcer, left eye
H16.043Marginal corneal ulcer, bilateral
H16.049Marginal corneal ulcer, unspecified eye
H16.051Mooren's corneal ulcer, right eye
H16.052Mooren's corneal ulcer, left eye
H16.053Mooren's corneal ulcer, bilateral
H16.059Mooren's corneal ulcer, unspecified eye
H16.061Mycotic corneal ulcer, right eye
H16.062Mycotic corneal ulcer, left eye
H16.063Mycotic corneal ulcer, bilateral
H16.069Mycotic corneal ulcer, unspecified eye
H16.071Perforated corneal ulcer, right eye
H16.072Perforated corneal ulcer, left eye
H16.073Perforated corneal ulcer, bilateral
H16.079Perforated corneal ulcer, unspecified eye
H16.101Unspecified superficial keratitis, right eye
H16.102Unspecified superficial keratitis, left eye
H16.103Unspecified superficial keratitis, bilateral
H16.109Unspecified superficial keratitis, unspecified eye
H16.111Macular keratitis, right eye
H16.112Macular keratitis, left eye
H16.113Macular keratitis, bilateral
H16.119Macular keratitis, unspecified eye
H16.121Filamentary keratitis, right eye
H16.122Filamentary keratitis, left eye
H16.123Filamentary keratitis, bilateral
H16.129Filamentary keratitis, unspecified eye
H16.131Photokeratitis, right eye
H16.132Photokeratitis, left eye
H16.133Photokeratitis, bilateral
H16.139Photokeratitis, unspecified eye
H16.141Punctate keratitis, right eye
H16.142Punctate keratitis, left eye
H16.143Punctate keratitis, bilateral
H16.149Punctate keratitis, unspecified eye
H16.201Unspecified keratoconjunctivitis, right eye
H16.202Unspecified keratoconjunctivitis, left eye
H16.203Unspecified keratoconjunctivitis, bilateral
H16.209Unspecified keratoconjunctivitis, unspecified eye
H16.211Exposure keratoconjunctivitis, right eye
H16.212Exposure keratoconjunctivitis, left eye
H16.213Exposure keratoconjunctivitis, bilateral
H16.219Exposure keratoconjunctivitis, unspecified eye
H16.221Keratoconjunctivitis sicca, not specified as Sjogren's, right eye
H16.222Keratoconjunctivitis sicca, not specified as Sjogren's, left eye
H16.223Keratoconjunctivitis sicca, not specified as Sjogren's, bilateral
H16.229Keratoconjunctivitis sicca, not specified as Sjogren's, unspecified eye
H16.231Neurotrophic keratoconjunctivitis, right eye
H16.232Neurotrophic keratoconjunctivitis, left eye
H16.233Neurotrophic keratoconjunctivitis, bilateral
H16.239Neurotrophic keratoconjunctivitis, unspecified eye
H16.241Ophthalmia nodosa, right eye
H16.242Ophthalmia nodosa, left eye
H16.243Ophthalmia nodosa, bilateral
H16.249Ophthalmia nodosa, unspecified eye
H16.251Phlyctenular keratoconjunctivitis, right eye
H16.252Phlyctenular keratoconjunctivitis, left eye
H16.253Phlyctenular keratoconjunctivitis, bilateral
H16.259Phlyctenular keratoconjunctivitis, unspecified eye
H16.261Vernal keratoconjunctivitis, with limbar and corneal involvement, right eye
H16.262Vernal keratoconjunctivitis, with limbar and corneal involvement, left eye
H16.263Vernal keratoconjunctivitis, with limbar and corneal involvement, bilateral
H16.269Vernal keratoconjunctivitis, with limbar and corneal involvement, unspecified eye
H16.291Other keratoconjunctivitis, right eye
H16.292Other keratoconjunctivitis, left eye
H16.293Other keratoconjunctivitis, bilateral
H16.299Other keratoconjunctivitis, unspecified eye
H16.301Unspecified interstitial keratitis, right eye
H16.302Unspecified interstitial keratitis, left eye
H16.303Unspecified interstitial keratitis, bilateral
H16.309Unspecified interstitial keratitis, unspecified eye
H16.311Corneal abscess, right eye
H16.312Corneal abscess, left eye
H16.313Corneal abscess, bilateral
H16.319Corneal abscess, unspecified eye
H16.321Diffuse interstitial keratitis, right eye
H16.322Diffuse interstitial keratitis, left eye
H16.323Diffuse interstitial keratitis, bilateral
H16.329Diffuse interstitial keratitis, unspecified eye
H16.331Sclerosing keratitis, right eye
H16.332Sclerosing keratitis, left eye
H16.333Sclerosing keratitis, bilateral
H16.339Sclerosing keratitis, unspecified eye
H16.391Other interstitial and deep keratitis, right eye
H16.392Other interstitial and deep keratitis, left eye
H16.393Other interstitial and deep keratitis, bilateral
H16.399Other interstitial and deep keratitis, unspecified eye
H16.401Unspecified corneal neovascularization, right eye
H16.402Unspecified corneal neovascularization, left eye
H16.403Unspecified corneal neovascularization, bilateral
H16.409Unspecified corneal neovascularization, unspecified eye
H16.411Ghost vessels (corneal), right eye
H16.412Ghost vessels (corneal), left eye
H16.413Ghost vessels (corneal), bilateral
H16.419Ghost vessels (corneal), unspecified eye
H16.421Pannus (corneal), right eye
H16.422Pannus (corneal), left eye
H16.423Pannus (corneal), bilateral
H16.429Pannus (corneal), unspecified eye
H16.431Localized vascularization of cornea, right eye
H16.432Localized vascularization of cornea, left eye
H16.433Localized vascularization of cornea, bilateral
H16.439Localized vascularization of cornea, unspecified eye
H16.441Deep vascularization of cornea, right eye
H16.442Deep vascularization of cornea, left eye
H16.443Deep vascularization of cornea, bilateral
H16.449Deep vascularization of cornea, unspecified eye
H16.8Other keratitis
H16.9Unspecified keratitis

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